Automated method and system for recognizing well control events
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United States of America Patent
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Nov 23, 2004
Grant Date -
Mar 4, 2004
app pub date -
Aug 27, 2002
filing date -
Aug 27, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
An automated method and system for recognizing a well control event includes determining a state of drilling operations. When drilling operations are in a circulating state, a benchmark for a relative flow value. The relative flow value is based on a flow of drilling fluid into a well bore and a flow of drilling fluid out of the well bore. A limit on variation of the relative flow value is determined from the benchmark. A cumulative sum for the relative flow value is determined over time in response to the relative flow value exceeding the limit. A well control event is recognized based on the cumulative sum.
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